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Expedient Synthesis of Α-Substituted Fluoroethenes Samir K

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Expedient Synthesis of Α-Substituted Fluoroethenes Samir K Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry This journal is © The Royal Society of Chemistry 2012 Supporting Information Expedient Synthesis of α-Substituted Fluoroethenes Samir K. Mandal, Arun K. Ghosh, Rakesh Kumar and Barbara Zajc* Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, New York 10031 TABLE OF CONTENTS Information Page General Experimental Methods 5 Synthesis of 2-[(Aryl)methylthio]benzo[d]thiazoles 5 From Halomethyl Arenes: General Procedure 5 2-[(Naphthalen-1-yl)methylthio]benzo[d]thiazole 6 2-[(2-Bromobenzyl)thio]benzo[d]thiazole 6 2-[(4-Nitrobenzyl)thio]benzo[d]thiazole 7 From Hydroxymethyl Arenes: General Procedure 7 2-[(3,4,5-Trimethoxybenzyl)thio]benzo[d]thiazole 7 2-[(1H-Indol-3-yl)methylthio]benzo[d]thiazole 8 Synthesis of tert-Butyl 3-[(benzo[d]thiazol-2-ylthio)methyl]-1H-indole-1-carboxylate 8 Synthesis of 2-[(Aryl)methylsulfonyl]benzo[d]thiazoles 9 Oxidation of 2-[(Aryl)methylthio]benzo[d]thiazoles: General Procedure 9 2-[(Naphthalen-1-yl)methylsulfonyl]benzo[d]thiazole (1a) 9 2-[(2-Bromobenzyl)sulfonyl]benzo[d]thiazole (1c) 10 2-[(3,4,5-Trimethoxybenzyl)sulfonyl]benzo[d]thiazole (1d) 10 2-[(4-Nitrobenzyl)sulfonyl]benzo[d]thiazole (1e) 11 tert-Butyl 3-[(benzo[d]thiazol-2-ylsulfonyl)methyl]-1H-indole-1-carboxylate (1g) 11 Fluorination of 2-[(Aryl)methylsulfonyl]benzo[d]thiazoles 12 Synthesis of 2a, 2c, 2d, 2e, 2h: General Procedure 12 2-[Fluoro(naphthalen-1-yl)methylsulfonyl]benzo[d]thiazole (2a) 12 2-[(2-Bromophenyl)fluoromethylsulfonyl]benzo[d]thiazole (2c) 13 2-[Fluoro(3,4,5-trimethoxyphenyl)methylsulfonyl]benzo[d]thiazole (2d) 13 2-[Fluoro(4-nitrophenyl)methylsulfonyl]benzo[d]thiazole (2e) 14 tert-Butyl 3-[(benzo[d]thiazol-2-ylsulfonyl)fluoromethyl]-1H-indole-1-carboxylate (2g) 14 Synthesis of 2-[(EWG)methylthio]benzo[d]thiazoles and 13C NMR listing for 5b and 5e 15 Synthesis of Ethyl 2-(Benzo[d]thiazol-2-ylthio)-2-fluoroacetate 15 Synthesis of Benzyl 2-(Benzo[d]thiazol-2-ylthio)-2-fluoroacetate 15 Synthesis of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl 2-(Benzo[d]thiazol-2-ylthio)-2- 16 fluoroacetate (mixture of two diastereomers in a 1.1:1 ratio) Synthesis of Benzyl 2-(Benzo[d]thiazol-2-ylsulfonyl)-2-fluoroacetate (5c) 17 Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry This journal is © The Royal Society of Chemistry 2012 Synthesis of (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 2-(benzo[d]thiazol-2-ylsulfonyl)-2- 18 fluoroacetate (5d) Synthesis of Diethyl Fluoro(naphthalen-2-yl)methylphosphonate (4) 18 Condensation Reactions of Fluorosulfones 2a-2e and 5a-5e with Paraformaldehyde: General 19 Procedure Method A 19 Method B 20 1-(1-Fluorovinyl)naphthalene (3a) 20 (1-Fluorovinyl)benzene (3b) 20 1-Bromo-2-(1-fluorovinyl)benzene (3c) 21 5-(1-Fluorovinyl)-1,2,3-trimethoxybenzene (3d) 21 1-(1-Fluorovinyl)-4-nitrobenzene (3e) 22 2-(1-Fluorovinyl)naphthalene (3f) 22 tert-Butyl 3-(1-fluorovinyl)-1H-indole-1-carboxylate (3g) 23 4-(1-Fluorovinyl)-2-(thiophen-2-yl)thiazole (3h) 23 (1-Fluorovinylsulfonyl)benzene (6a) 24 Ethyl 2-Fluoroacrylate (6b) 24 Benzyl 2-Fluoroacrylate (6c) 24 (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl 2-Fluoroacrylate (6d) 25 2-Fluoro-N-methoxy-N-methylacrylamide (6e) 25 Reaction of Diethyl Fluoro(phenylsulfonyl)methylphosphonate with Paraformaldehyde 26 Suzuki Coupling of 1-Bromo-2-(1-fluorovinyl)benzene (3c): General Procedure 26 2-(1-Fluorovinyl)-4'-methoxybiphenyl (7) 26 1-[2'-(1-Fluorovinyl)biphenyl-4-yl]ethanone (8) 27 References 28 1H NMR of 2-[(Naphthalen-1-yl)methylthio]benzo[d]thiazole 29 13C NMR of 2-[(Naphthalen-1-yl)methylthio]benzo[d]thiazole 30 1H NMR of 2-[(2-Bromobenzyl)thio]benzo[d]thiazole 31 13C NMR of 2-[(2-Bromobenzyl)thio]benzo[d]thiazole 32 1H NMR of 2-[(3,4,5-Trimethoxybenzyl)thio]benzo[d]thiazole 33 13C NMR of 2-[(3,4,5-Trimethoxybenzyl)thio]benzo[d]thiazole 34 1H NMR of 2-[(4-Nitrobenzyl)thio]benzo[d]thiazole 35 13C NMR of 2-[(4-Nitrobenzyl)thio]benzo[d]thiazole 36 1H NMR of 2-[(1H-Indol-3-yl)methylthio]benzo[d]thiazole 37 13C NMR of 2-[(1H-Indol-3-yl)methylthio]benzo[d]thiazole 38 1H NMR of tert-Butyl 3-[(benzo[d]thiazol-2-ylthio)methyl]-1H-indole-1-carboxylate 39 13C NMR of tert-Butyl 3-[(benzo[d]thiazol-2-ylthio)methyl]-1H-indole-1-carboxylate 40 1H NMR of 2-[(Naphthalen-1-yl)methylsulfonyl]benzo[d]thiazole (1a) 41 13C NMR of 2-[(Naphthalen-1-yl)methylsulfonyl]benzo[d]thiazole (1a) 42 Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry This journal is © The Royal Society of Chemistry 2012 1H NMR of 2-(Benzylsulfonyl)benzo[d]thiazole (1b) 43 13C NMR of 2-(Benzylsulfonyl)benzo[d]thiazole (1b) 44 1H NMR of 2-[(2-Bromobenzyl)sulfonyl]benzo[d]thiazole (1c) 45 13C NMR of 2-[(2-Bromobenzyl)sulfonyl]benzo[d]thiazole (1c) 46 1H NMR of 2-[(3,4,5-Trimethoxybenzyl)sulfonyl]benzo[d]thiazole (1d) 47 13C NMR of 2-[(3,4,5-Trimethoxybenzyl)sulfonyl]benzo[d]thiazole (1d) 48 1H NMR of 2-[(4-Nitrobenzyl)sulfonyl]benzo[d]thiazole (1e) 49 13C NMR of 2-[(4-Nitrobenzyl)sulfonyl]benzo[d]thiazole (1e) 50 1H NMR of 2-[(Naphthalen-2-yl)methylsulfonyl]ben-zo[d]thiazole (1f) 51 1H NMR of tert-Butyl 3-[(benzo[d]thiazol-2-ylsulfonyl)methyl]-1H-indole-1-carboxylate (1g) 52 13C NMR of tert-Butyl 3-[(benzo[d]thiazol-2-ylsulfonyl)methyl]-1H-indole-1-carboxylate (1g) 53 1H NMR of 2-{[2-(Thiophen-2-yl)thiazol-4-yl]methylsulfonyl}benzo[d]thiazole (1h) 54 1H NMR of 2-[Fluoro(naphthalen-1-yl)methylsulfonyl]benzo[d]thiazole (2a) 55 13C NMR of 2-[Fluoro(naphthalen-1-yl)methylsulfonyl]benzo[d]thiazole (2a) 56 1H NMR of 2-[Fluoro(phenyl)methylsulfonyl]benzo[d]thiazole (2b) 57 13C NMR of 2-[Fluoro(phenyl)methylsulfonyl]benzo[d]thiazole (2b) 58 1H NMR of 2-[(2-Bromophenyl)fluoromethylsulfonyl]benzo[d]thiazole (2c) 59 13C NMR of 2-[(2-Bromophenyl)fluoromethylsulfonyl]benzo[d]thiazole (2c) 60 1H NMR of 2-[Fluoro(3,4,5-trimethoxyphenyl)methylsulfonyl]benzo[d]thiazole (2d) 61 13C NMR of 2-[Fluoro(3,4,5-trimethoxyphenyl)methylsulfonyl]benzo[d]thiazole (2d) 62 1H NMR of Crude Reaction Mixture, with Major Component 2-[Fluoro(4- 63 nitrophenyl)methylsulfonyl]benzo[d]thiazole (2e) 1H NMR of 2-[Fluoro(naphthalen-2-yl)methylsulfonyl]benzo[d]thiazole (2f) 64 1H NMR of tButyl 3-[(benzo[d]thiazol-2-ylsulfonyl)fluoromethyl]-1H-indole-1-carboxylate (2g) 65 13C NMR of tButyl 3-[(benzo[d]thiazol-2-ylsulfonyl)fluoromethyl]-1H-indole-1-carboxylate (2g) 66 1H NMR of 2-{Fluoro[2-(thiophen-2-yl)thiazol-4-yl]methylsulfonyl}benzo[d]thiazole (2h) 67 1H NMR of 1-(1-Fluorovinyl)naphthalene (3a) 68 13C NMR of 1-(1-Fluorovinyl)naphthalene (3a) 69 1H NMR of (1-Fluorovinyl)benzene (3b) 70 13C NMR of (1-Fluorovinyl)benzene (3b) 71 1H NMR of 1-Bromo-2-(1-fluorovinyl)benzene (3c) 72 13C NMR of 1-Bromo-2-(1-fluorovinyl)benzene (3c) 73 1H NMR of 5-(1-Fluorovinyl)-1,2,3-trimethoxybenzene (3d) 74 13C NMR of 5-(1-Fluorovinyl)-1,2,3-trimethoxybenzene (3d) 75 1H NMR of 1-(1-Fluorovinyl)-4-nitrobenzene (3e) 76 13C NMR of 1-(1-Fluorovinyl)-4-nitrobenzene (3e) 77 1H NMR of 2-(1-Fluorovinyl)naphthalene (3f) 78 13C NMR of 2-(1-Fluorovinyl)naphthalene (3f) 79 1H NMR of tert-Butyl 3-(1-fluorovinyl)-1H-indole-1-carboxylate (3g) 80 Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry This journal is © The Royal Society of Chemistry 2012 13C NMR of tert-Butyl 3-(1-fluorovinyl)-1H-indole-1-carboxylate (3g) 81 1H NMR of 4-(1-Fluorovinyl)-2-(thiophen-2-yl)thiazole (3h) 82 13C NMR of 4-(1-Fluorovinyl)-2-(thiophen-2-yl)thiazole (3h) 83 1H NMR of Diethyl Fluoro(phenylsulfonyl)methylphosphonate (4) 84 13C NMR of Diethyl Fluoro(phenylsulfonyl)methylphosphonate (4) 85 1H NMR of 2-[Fluoro(phenylsulfonyl)methylsulfonyl]benzo[d]thiazole (5a) 86 13C NMR of 2-[Fluoro(phenylsulfonyl)methylsulfonyl]benzo[d]thiazole (5a) 87 1H NMR of Ethyl 2-(Benzo[d]thiazol-2-ylthio)-2-fluoroacetate 88 1H NMR of Ethyl 2-(Benzo[d]thiazol-2-ylsulfonyl)-2-fluoroacetate (5b) 89 13C NMR of Ethyl 2-(Benzo[d]thiazol-2-ylsulfonyl)-2-fluoroacetate (5b) 90 1H NMR of Benzyl 2-(Benzo[d]thiazol-2-ylthio)-2-fluoroacetate 91 13C NMR of Benzyl 2-(Benzo[d]thiazol-2-ylthio)-2-fluoroacetate 92 1H NMR of Benzyl 2-(Benzo[d]thiazol-2-ylsulfonyl)-2-fluoroacetate (5c) 93 13C NMR of Benzyl 2-(Benzo[d]thiazol-2-ylsulfonyl)-2-fluoroacetate (5c) 94 1H NMR of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl 2-(Benzo[d]thiazol-2-ylthio)-2- 95 fluoroacetate (mixture of two diastereomers in a 1.1:1 ratio) 13C NMR of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl 2-(Benzo[d]thiazol-2-ylthio)-2- 96 fluoroacetate (mixture of two diastereomers in a 1.1:1 ratio) 1H NMR of (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 2-(benzo[d]thiazol-2-ylsulfonyl)-2- 97 fluoroacetate (5d) 13C NMR of (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 2-(benzo[d]thiazol-2-ylsulfonyl)-2- 98 fluoroacetate (5d) 1H NMR of 2-(Benzo[d]thiazol-2-ylsulfonyl)-2-fluoro-N-methoxy-N-methylacetamide (5e) 99 13C NMR of 2-(Benzo[d]thiazol-2-ylsulfonyl)-2-fluoro-N-methoxy-N-methylacetamide (5e) 100 1H NMR of (1-Fluorovinylsulfonyl)benzene (6a) 101 13C NMR of (1-Fluorovinylsulfonyl)benzene (6a) 102 1H NMR of Ethyl 2-Fluoroacrylate (6b) 103 1H NMR of Benzyl 2-Fluoroacrylate (6c) 104 13C NMR of Benzyl 2-Fluoroacrylate (6c) 105 1H NMR of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl 2-Fluoroacrylate (6d) 106 13C NMR of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl 2-Fluoroacrylate (6d) 107 1H NMR of 2-Fluoro-N-methoxy-N-methylacrylamide (6e) 108 13C NMR of 2-Fluoro-N-methoxy-N-methylacrylamide (6e) 109 1H NMR of 2-(1-Fluorovinyl)-4'-methoxybiphenyl (7) 110 13C NMR of 2-(1-Fluorovinyl)-4'-methoxybiphenyl (7) 111 1H NMR of 1-[2'-(1-Fluorovinyl)biphenyl-4-yl]ethanone (8) 112 13C NMR of 1-[2'-(1-Fluorovinyl)biphenyl-4-yl]ethanone (8) 113 Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry This journal is © The Royal Society of Chemistry 2012 GENERAL EXPERIMENTAL METHODS THF was distilled over LiAlH4, and then over sodium, methylene chloride was distilled over CaH2 powder, and acetone over anhydrous K2CO3.
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